Deploy multi-site UCCX

[deibertine]

Hello - Wanted to get an idea and verify our planned design below.

-New deployment on a multi-site (10) uccx architecture

- 2 sites to act as primary and secondary HA complete replication over wan in between

- 3 main call center points for call manager, two main and one act as fo

-MPLS connections in all sites, bandwidth varies depending on size of the site 

-localized DHCP network at each site to hand off to local uc clients (eg VoIP phones, soft phones etc) on a /16 class C network 

-no vlan, all straight network as this is new ip range /16 that will be segregated in blocks of IPs to distribute per site

-QoS feature will be enabled per site location giving voice priority 

-data traffic separated as we plan to keep existing local ISP services

-no vlan tagging in local uccx server (VMware), we will use one interface to interact within uccx virtual machines 

Questions:

1. Do you see a need for vlan at each site location?

2. Do you recommend vlan tagging in our uccx servers?

3. What issue that you think we might see with this design?

4. What else is lacking? Did we forget to insert possible considerations?

Please kindly advise us on best practice approach. Much thanks in advance.

[Terry Cheema]

Hi Mate - So you mean you will subnet the /16 and allocate the different subnets to your different sites? If thats what you mean I dont see any issue with that as long as you assign a unique subnet per site that you can advertise in to your MPLS cloud. Regards to layer 2 vlans it is sort of standard and recommended practice to have a separate vlan for voice - from security point of view mainly but having said that if for any compelling reason you dont want a separate vlan for voice that would work as well as long as you setup QoS and prioritize the voice traffic.

For ESXi - if you tag the VLAN for VMs on UCS you will need to trunk to your switch to pass the tags. This way you can then have more VMs in future and you can have them in different subnets using the same vswitch, all you need to do is allow the vlan on the trunk.

Otherwise if you are no setting VLAN tags - you can have two vswitches (for MGMT and VMs) - on the switch side you will configure these as access ports with appropriate VLANs for Mgmt and Application traffic.

For the UCCX HA over WAN design refer to this section of the UCCX design guide: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cust_contact/contact_center/crs/express_10_6/design/guide/UCCX_BK_CBB99111_00_cisco-unified-contact-center-express/UCCX_BK_CBB99111_00_cisco-unified-contact-center-express_chapter_010.html#UCCX_RF_U938BBDA_00

Go through the network requirements etc. I would recommend you to read through the whole guide for a thorough understanding.

Please feel free to ask if you have any more questions.

-Terry

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